Insulated connecter



July 29 1924. 1,503,073

L. STEINBERGER INSULATED CONNECTER Filed May 5 1919 l/VVE/VTOH Lozzzls Siam/barge? Patented July 29, 1924.

UNITED STATES LOUIS STEINBERGER, OF BROOKLYN, NEW YORK.

INSULATED CONNECTER.

Application filed May 5,

To all whom it may concern:

Be it known that I, LOUIS STEINBERGER, a citizen of the UnitedStates, and a resident of the borough of Brooklyn, city and State of New York, have invented certain new and useful Improvements in Insulated Connecters', of which the following is a specification.

This invention relates to improvements in insulated connectors of the condenser type and has particular reference to structures by means of which the electrical stresses and strains will be redistributed within the body portion of the insulator.

One of the objects of the invention therefore is to provide means in the insulator body which willcause a redistribution of the electrical stresses and strains within the body portion of the insulator.

Another object is to provide an insulated connecter having a conductor molded axially therein and extending therethrough. said conductor being surrounded by a metallic ring of substantial height also molded within the central portion of the body of insulating material, the completed body of insulating material being supported by a flanged supporting ring, the flange being so constructed that the height or length of the inner cylindrical surface thereof is equal to the height or length of the condenser ring.

Other objects will appear from the subjoined specification and claims.

Referring to the drawings in which the same reference character indicates the same part in the several views:

Fig. 1 is a vertical section of the insulator connecter embodying my invention.

FFig. 2 is a cross section on line 2-2 of In the drawings, A represents the body of insulating material which consists of a core and a surface layer 11 of the same or other suitable insulating material surrounding the core, the insulating material used having either the same or different dielectric qualities. The body A. is elongated and has a series of annular grooves 15 and projections 16 formed in the surface thereof. Molded to the central portion of the body of insulating material is a conductor 20 which extends axially therethrough, the ends 21 and 22 thereof profecting at ea h end, These ends are prop-therearound in the form shown and within 1919. Serial No. 294,704.

erly screw-threaded at 23 and 24 to which the leads may be connected.

A metallic ring of substantial length or height surrounds the conductor and is embedded substantially centrally within the 60 body of the insulator by molding the insulating material therearound, thereby hermetically embedding the ring 30 within the mass of insulating material.

A supporting ring provided with oppositely extending flanges 41 and 42 having beaded edges 43 and 44 is molded to the outside of the body of insulating material at the central zone thereof, the upper and lower edges of the ring being rounded as at 45 and 46. The inner surface 47 of the flanges is cylindrical and extends vertically from the points x, 3 and is situated directly opposite and is substantially the same length or height as the ring 30 as shown, thereby permitting or causing the lines of force to be distributed uniformly at that point of the insulator.

Bolt holes 48 are provided in the supporting ring through which bolts may be passed to secure the insulator to its support as well understood.

In practice, some of the insulating material may be weaker at one point due to the fact that its porosity may be uneven. The object of the condenser ring is to protect the insulator thus prolonging its life should any such defects occur, thereby increasing its efiiciency. In the event that the insulator body should be sufiiciently porous to permit a concentrated group of lines of electrostatic force to reach the ring 30 from the conductor 20, the lines upon reaching the ring will instantly become distributed instead of being concentrated to a needle point or thin line, and the density of the electrostatic field is thereby weakened to that extent and the danger of its causing a puncture or a flash-over of electricity is consequently lessened.

An eflicient method of manufacture of the insulator is to place the conductor rod and the condenser ring in the die in their respective positions as shown, and then mold the core 10 therearound into some such 105 I shape as shown in the drawing. The portion of core 10 bearing the conductor and the ring in position is then placed in the die and the surface insulation 11 is molded the sleeve of the supporting ring, thereby completing the device.

In carrying out this invention any suitable moldable insulating material may be used,

5 but I prefer to use that insulating material well known in the art as electrose.

The insulated connecter above described may be converted into a bushing by removing the conducting element; or a bushing may be originally constructed by omitting the conducting element.

As changes of construction could be made within the scope of my invention, it is in- 4 tended that all matter contained in the 1 above description or shown in the accompanying drawing shall be interpreted as illustrative and not in a limiting sense.

Having described my invention what I claim as new and desire to secure by Letters Patent is:

1'. In a device of the class described, a solid core of insulating material having a conductor extending axially therethrough, a conductor ring surrounding and spaced 7 apart from the conductor at the central portion of the insulator body, an outer layer of insulating material surrounding said core, and molded to the projecting ends of said conductor to hermetically seal said core, and a supporting ring for said outer layer of insulating material, said ring be? ing formed with a cylindrical portion of substantially the same length as said conductor ring and adapted to distribute the electrical stresses set up within the insulator over a large area.

2. In a device of the class described, a

solid core of insulating material having a conductor extending axially therethrough,

a conductor ring surrounding and s aced apart from the conductor at the centra' portion of the insulator body, an outer layer of insulating material surrounding said core, and a supporting ring for said outer 4 layer of insulating material, said ring being formed with a cylindrical portion of substantially the same length as said conductor ring and adapted to distribute the electrical stresses set up within the insulator over a large area, the inner conductor ring being spaced equi-distant from the conductor and the cylindrical portion of the outer ring.

3. Adevice of the type described which comprises, an inner body of insulating material, a conductor extending through and embedded in-said body of insulating material, and a envelope of insulating material entirely surrounding and enclosing said inner body of insulating material and molded about the projecting ends of said conductor to hermetically seal said inner body of insulating material.

l. A device of the type describe-d which comprises, an inner elongated body of insulating material, a conductor extending lengthwise through and embedded in, said body of insulating material, an envelopeof insulating material entirely surrounding and enclosing said inner body of insulating material and molded about the projecting ends of said conductor to hermetically seal said inner body of insulating material, and asupporting ring surrounding said envelope of insulating material.

5. A device of the type described which comprises, an inner body of insulating material, a conductor extending through said body of insulating material, and an envelope of insulating material of different dielectric properties from those of said inner body entirely surrounding and enclosing said inner body of insulating material and molded about the projecting ends of said conductor to hermetically seal said inner body of insulating material.

In witness whereof, I have hereunto set my hand at the borough of Manhattan, city and State of New York, this second day of May, 1919.

' LOUIS STEINBERGER. In presence of:

ZITA M. GRAHAM. 

